[feature-request] Seirawan Chess

Please Lichess, make Seirawan Chess your next big addition to the variant family!

en.wikipedia.org/wiki/Seirawan_chess

I don't think this will be hard to implement (compared to Crazyhouse). All that is needed is to add 2 new pieces, the Elephant and Hawk, and the ability to place those pieces in the opening when another piece is developed.

I would actually be really interested in this too. Yasser did some nice videos on Youtube about Seirawan chess

I'm curious to know how easy or difficult it would be to add a new type of piece, as well as conditions for when and where it can be dropped onto the board.

Honestly, I think it would be pretty easy to add the new pieces from a programming standpoint. (I've worked with a few programming languages before, but the bulk of my coding experience comes from Java.) Simply create a new piece that combines the functionality of the knight and bishop, and the knight and rook respectively.